Axial dispersion and dispersed phase holdup characteristics of a reciprocating plate extraction column in which six different plate arrangement have been investigated. The axial dispersion coefficient were correlated in terms of A² f which has the same dimension of axial dispersion cofficient. The minimum value of A₂ f increased with increase in free opening area fraction of plate. Dispersed phase holdup increased with the continuous phase velocity but it was relatively insensitive to changes in the dispersed phase velocity. Dispersed phase hold up decreased with an increase in free opening area fraction of plate.